释义 |
valinomycin in American English (ˌvælənoʊˈmaɪsɪn) noun an antibiotic polypeptide isolated from soil bacteria, that promotes the movement of potassium ions in cells Word origin < valine + -mycin Examples of 'valinomycin' in a sentencevalinomycin After 24 h fibroblasts and melanoma cells developed mitochondrial potential changes similar to valinomycin.Ionophores such as valinomycin and nigericin are potent tools for studying the impact of ion perturbance on cellular functions.Loss of autophagosomal protein function leads to valinomycin sensitivity and an overproduction of reactive oxygen species upon mitochondrial damage.Further mitochondrial damage by valinomycin treatment of yeast cells triggers the mitophagic removal of the same respiratory complexes.The mitochondriotoxic mechanism of triclosan differs from that of valinomycin, cereulide and the enniatins by not involving potassiumionophoric activity.We identified nearly 130 genes whose absence leads either to resistance or to hypersensitivity to valinomycin and/or nigericin.The use of cereulide standard was also compared to the most frequently used surrogate standard, the antibiotic valinomycin.Bioassay-guided isolation and purification yielded three previously known compounds namely, cyclic depsipeptide valinomycin, indolocarbazole alkaloid staurosporine and butenolide. |